Proposal for better structure of seeds in Rails engines

gistfile1.txt

Engine
======


File structure:

EngineFoo
- app
- db
  - seeds.rb
- lib
  - seeds
    - my_seeds.rb
  - engine_foo.rb



engine_foo/lib/engine_foo.rb
============================

module EngineFoo
  autoload :MySeeds, 'seeds/my_seeds'
end


engine_foo/lib/seeds/my_seeds.rb
================================

module EngineFoo
  class MySeeds
    def self.create_this_data
      ...
    end
    def self.create_that_data
      ...
    end
    def self.create
      create_this_data
      create_that_data
    end
  end
end


engine_foo/db/seeds.rb
======================

EngineFoo::MySeeds.create




HostApp
=======

host_app/db/seeds.rb
====================

# make the engine load its seed class
EngineFoo::MySeeds

# modify the seeds
class EngineFoo::MySeeds
  def self.create_that_data
    # modified implementation
  end
end

# run the seeds
EngineFoo::Engine.load_seed




Advantages
==========

* Better structured in the engine itself
* Easily extendable
* Testable